Core Wrap At a Glance

Core Wrap

The core wrap’s main job is to keep the fluff and superabsorbent polymer (SAP) matrix contained at the center of the core. It is also important to note that the adhesives used to seal the core wrap and bond adjacent materials prevent core shifting. Keeping the core in place creates a more comfortable fit for the wearer and allows for best performance during use.

There are two types of core wraps manufacturers typically use today:

  • Nonwoven wraps, which have faster absorption but do not reduce the risk of core crack leakage.
  • Tissue wraps, which have slower absorption but are known for helping active users stay drier with less rewet and hold up better against core cracking. 

In some cases, disposable hygiene producers are looking for ways to completely eliminate the core wrap to create thinner products. To do this, one must choose the right construction adhesives for core integrity, as the adhesives are responsible for stabilizing the fluff and SAP matrix.

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